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City gas utilities bring a more comfortable lifestyle to 28.6 million
households nationwide by supplying energy for daily living.
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City gas utilities bring people good life with the latest gas appliances
and systems, including pleasant cooking and meals with gas flame
and the comfort of hot water available at anytime. In the bathroom,
a gas fired hot-water heater/dryer unit controls temperatures within
a narrow temperature range, preventing sudden temperature changes
and possible scalding; while a gas fired radiant in-floor heating
system keeps you warm from the feet up. Gas is also the power source
for clean, energy-saving and powerful air conditioners. The line-up
extends to include "ECOWILL", a gas engine powered cogeneration
unit, and fuel cells that simultaneously produce electricity and
hot water.
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City gas
is energy that provides a more comfortable life style.
･ Sales volume for residential use
[use[unit: million m3 (41.8605MJ/m3)] |
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Residential
customers account for 94% of the total number of customers
･ Number of residential customers
[unit: million] |
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New
energy-saving equipment using gas as a clean energy is
being introduced annually and is attracting great attention.
The ultimate combination of a cogeneration system for
residential use (gas fired power generation) and a power
generation system using natural energy sources (solar
power generation, etc.) makes environmentally friendly
housing a reality. |
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The
ﾒEcowillﾓ system and residential fuel cell powered co-generation
systems efficiently utilize gas to simultaneously generate
electricity and hot water. These home power generating
systems are drawing attention. |
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Gas
contributes to a comfortable lifestyle, with baths, mist
saunas, in-floor radiant heating, dishwashers, dryers,
etc. Never worry about running out of hot water again!
There is always an abundant supply. |
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| Gas provides
a safe, serene space free of abrupt temperature
changes by means of in-floor radiant heating, fireplaces,
hot water radiators, bathroom heaters, etc. |
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| Whether baking,
steaming, boiling, saut司ng or roasting, a gas flame coaxes
the most delicious flavors from your food, while dancing
gas flames from the hearth warm your heart. |
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Residential fuel cells for home power generation
Residential fuel cells constitute
a completely new type of system for simultaneous generation
of electrical power and heating of water in the home. The worldﾕs
first residential fuel cell system was commercially installed
in the Japanese prime ministerﾕs official residence in 2005.
Residential fuel cells are expected to come into wide use.
Fuel cells produce electricity from hydrogen (H2) and oxygen
(O2) by applying a principle that is the reverse of electrolysis
in water.
Residential models extract hydrogen from city gas and oxygen
from the air. Because they produce electricity by a chemical
reaction instead of gas combustion, they are quiet and clean.
Even the small-capacity systems offer both a high generation
efficiency and a high total efficiency due to their use of waste
heat. As such, they are means of making effective use of energy
in a manner befitting the 21st century. |
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